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  * Copyright 2007, JBoss Inc., and individual contributors as indicated
  * by the @authors tag. See the copyright.txt in the distribution for a
  * full listing of individual contributors.
  *
  * This is free software; you can redistribute it and/or modify it
  * under the terms of the GNU Lesser General Public License as
  * published by the Free Software Foundation; either version 2.1 of
  * the License, or (at your option) any later version.
  *
  * This software is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this software; if not, write to the Free
  * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
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package org.jboss.security.xacml.interfaces;

import java.util.List;

/**
 *  Represents a Policy or a PolicySet in the XACML World
 *  @author Anil.Saldhana@redhat.com
 *  @since  Jul 5, 2007 
 *  @version $Revision$
 */
public interface XACMLPolicy extends ContextMapOp
{
   /**
    * Type identifying a PolicySet
    */
   int POLICYSET = 0;

   /**
    * Type identifying a Policy
    */
   int POLICY = 1;

   /**
    * Return a type (PolicySet or Policy)
    * @return int value representing type
    */
   int getType();

   /**
    * A PolicySet can contain policies within.
    * Setter to set the policies inside a policyset
    * @param policies a list of policies
    */
   void setEnclosingPolicies(List<XACMLPolicy> policies);

   /**
    * Return the enclosing policies for a PolicySet
    * @return a list of policies
    */
   List<XACMLPolicy> getEnclosingPolicies();
}
